The storm sweeping over this area now is sure to cause _____ of vegetables in the coming days.
| A．rarity | B．scarcity | C．invalidity | D．variety |
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With more forests being destroyed, huge quantities of good earth _____ each year.
| A．is washing away | B．are being washed away |
C．are washing away |
D．is being washed away |
---- ____?
---- Maybe the possible solutions to the air pollution.
| A．Do you think what they are talking about |
| B．Do you think what are they talking about |
| C．What do you think they are talking aobut |
| D．What do you think are they talking about |
To my surprise, he was lost in thought then and not ____ of my presence at all.
| A．certain | B．fond | C．sensitive | D．aware |
When I met him the other day, it was the first time we ____ each other since we were at school.
| A．saw | B．hadseen | C．wereseeing | D．haveseen |
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